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Update MongoDB field using value of another field
In MongoDB, is it possible to update the value of a field using the value from another field? The equivalent SQL would be something like:
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Formula px to dp, dp to px android
...olved my problem by using the following formulas. May other people benefit from it.
dp to px:
displayMetrics = context.getResources().getDisplayMetrics();
return (int)((dp * displayMetrics.density) + 0.5);
px to dp:
displayMetrics = context.getResources().getDisplayMetrics();
return (int) ((px/...
How to identify if a webpage is being loaded inside an iframe or directly into the browser window?
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Having a page with an iframe within an iframe, to test from my child iframe if my parent iframe was embeded in the page, I used if (parent === top)
– sglessard
Mar 27 '12 at 14:31
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Library not loaded: /usr/local/opt/readline/lib/libreadline.6.2.dylib
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this worked for me also, saved me from updating postges
– Rich
Oct 12 '17 at 12:56
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Finding the max value of an attribute in an array of objects
...Note that this returns the object that had the max value not the max value from the object. This may or may not be what you want. In my case it was what I wanted. +1
– John
Nov 24 '17 at 23:46
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How to close current tab in a browser window?
...you are allowed to close the window with javascript. Firefox disallows you from closing other windows. I believe IE will ask the user for confirmation. Other browsers may vary.
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Stop form refreshing page on submit
How would I go about preventing the page from refreshing when pressing the send button without any data in the fields?
20 A...
How to reverse apply a stash?
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thanks, you help me from staged change which was not unapply.
– Fa.Shapouri
Jan 15 '17 at 13:53
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Is it possible for git-merge to ignore line-ending differences?
...s authorize using merge with strategy recursive and strategy option (-X):
from "Git Merge and Fixing Mixed Spaces and Tabs with two Branches":
git merge -s recursive -Xignore-space-at-eol
But using "-Xignore-space-change" is also a possibility
Fab-V mentions below:
git merge master -s recursive...
Task vs Thread differences [duplicate]
... where the caller does not need the result.
Task
Finally, the Task class from the Task Parallel Library offers the best of both worlds. Like the ThreadPool, a task does not create its own OS thread. Instead, tasks are executed by a TaskScheduler; the default scheduler simply runs on the ThreadPool...